<template>
    <div class="gooodsinfo-container">
        <transition
        @before-enter = "beforeEnter"
        @enter = "enter"
        @after-enter = "afterEnter"
        >
            <div class="ball" v-show="ballFlag" ref="ball"></div>
        </transition>
       <!-- 商品轮播图区域 -->
       <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<swiper :lunbotuList="lunbotu"></swiper>
					</div>
				</div>
       </div>

       <!-- 商品购买区域 -->
       <div class="mui-card">
				<div class="mui-card-header">{{goodsinfo.title}}</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p class="price">
                            市场价：<del>{{goodsinfo.market_price}}</del>&nbsp;&nbsp;销售价：<span class="now_price">{{goodsinfo.sell_price}}</span>
                        </p>
                        <p>购买数量：<numbox @getCount="getSelectedCount"
                        :max="goodsinfo.stock_quantity"></numbox></p>
                        <p>
                            <mt-button type="primary" size="small">立即购买</mt-button>
                            <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
                        </p>
					</div>
				</div>
			</div>
       <!-- 商品参数区域 -->
       <div class="mui-card">
				<div class="mui-card-header">商品参数</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
					<p>商品货号：{{goodsinfo.goods_no}}</p>
					<p>库存情况：{{goodsinfo.stock_quantity}}</p>
					<p>上架时间：{{goodsinfo.add_time|dateFormat}}</p>
					</div>
				</div>
				<div class="mui-card-footer">
                    <mt-button type="primary" size="large" plain @click="goDesc(id)">图文介绍</mt-button>
                    <mt-button type="danger" size="large" plain @click="goComment(id)">商品评论</mt-button>
                </div>
			</div>
    </div>
</template>

<script>
import numbox from '../subcomponents/goodsinfo_numbox.vue'
import swiper from '../subcomponents/swiper.vue'
export default {
data(){
    return{
        id:this.$route.params.id, //将路由参数对象中的id挂在data中
        lunbotu:[], //获取轮播图的数据
        goodsinfo:{}, //获取到商品信息
        ballFlag:false ,//控制小球的隐藏和显示标识符
        selectedCount:1 //保存商品数量
    }
}, 
created(){
    this.getLunbotu();
    this.getGoodsInfo();
},
methods:{
    getLunbotu(){
        this.$http.get('api/getthumimages/'+this.id).then(result=>{
            if(result.body.status===0){
                result.body.message.forEach(item =>{
                    item.img = item.src;
                });
               this.lunbotu = result.body.message; 
            }
        })
    },

    getGoodsInfo(){  //获取商品信息
        this.$http.get('api/goods/getinfo/'+this.id).then(result=>{
            if(result.body.status ===0){
                this.goodsinfo = result.body.message[0];
            }
        })
    },

    goDesc(id){ //使用编程跳转到 图文介绍页面
        this.$router.push({name:'goodsdesc',params:{id}});
    },

    goComment(id){ //使用编程跳转到 商品评论页面
        this.$router.push({name:'goodscomment',params:{id}});
    },

    addToShopCar(){ //加入购物车
        this.ballFlag = !this.ballFlag;
        var goodsinfo ={
            id:this.id,
            count:this.selectedCount,
            price:this.goodsinfo.sell_price,
            selected:true
        };
        this.$store.commit("addToCar",goodsinfo)
    },

    beforeEnter(el){
        el.style.transform="translate(0,0)"
    },
    enter(el,done){
        el.offsetWidth;
        //获取小球在页面中的位置
        const ballPosition = this.$refs.ball.getBoundingClientRect();
        //获取会标位置
        const badgePosition = document.getElementById('badge').getBoundingClientRect();

        const xDist = badgePosition.left - ballPosition.left;
        const yDist = badgePosition.top - ballPosition.top;

        el.style.transform=`translate(${xDist}px,${yDist}px)`;
        el.style.transition = 'all 0.5s cubic-bezier(.4,-0.3,1,.68)';
        done()
    },
    afterEnter(el){
        this.ballFlag = !this.ballFlag
    },
    getSelectedCount(count){
        this.selectedCount = count;
    }


},
components:{
        swiper,
        numbox
    }
}
</script>

<style lang="scss" scoped>
.gooodsinfo-container{
    background-color: #eee;
    overflow: hidden;
    .now_price{
        color: red;
        font-size: 16px;
        font-weight: bold;
    }

    .mui-card-footer{
        display:block;
        button{
            margin: 15px 0;
        }
    }
    .ball{
        width: 15px;
        height: 15px;
        border-radius: 50%;
        background-color:red;
        position:absolute;
        z-index: 99;
        top:390px;
        left: 146px;
       


    }
}

</style>


